for solar energy and heating systems. In addition to a
selection of pre-programmed basic systems, freely
programmable individual system configurations can also
be realised. The standard TR 0704 has three heat volume
measurement inputs and an hours-of-operation logger for
each of the four controller outputs. A special feature is the
ability to not only display the current values of temperature,
irradiation and energy volumes, but also to display the
accumulated values over several days in the form of a
graphical curve via a graphical dot matrix LCD-Display.
The modular construction of the TR 0704 system controller
allows the control system to be expanded with up to four
extra TA 0403 I/O modules. Every extra I/O module has its
own microprocessor with four temperature recording inputs
and three switching outputs, some of which can also be
speed controlled. This means that the controller can be
expanded at any time to a maximum of 23 inputs and 16
outputs. The basic version of the TR 0704 system controller
has seven inputs for temperature, irradiation or flow rate
recording and four outputs for controlling circulation
pumps or switching valves. Communication with external
peripherals is provided by an IS bus, a fault message
output and an RS232 interface.
· Heat meter and hours-of-operation logger
· Can be modularly extended with the TA 0403
· Menu-driven LCD-Display